def get_tree(self,
chrom,
start=1,
end=None,
samples=None,
return_format="tree_obj"):
print("chrom: {} start: {} end: {} samples: {}".format(
chrom, start, end, samples))
names, matrix = self.get_matrix(chrom,
start=start,
end=end,
samples=samples,
return_format="Phylo")
distance_matrix = _DistanceMatrix(names, matrix)
constructor = DistanceTreeConstructor()
tree = constructor.nj(distance_matrix) # neighbour joining tree
if return_format == "tree_obj":
return tree
elif return_format == "newick":
treeIO = StringIO()
Phylo.write(tree, treeIO, "newick")
treeString = treeIO.getvalue()
treeString = treeString.strip()
return treeString
def test_good_construction(self):
dm = _DistanceMatrix(self.names, self.matrix)
self.assertTrue(isinstance(dm, TreeConstruction._DistanceMatrix))
self.assertEqual(dm.names[0], 'Alpha')
self.assertEqual(dm.matrix[2][1], 3)
self.assertEqual(len(dm), 4)
self.assertEqual(repr(dm), "_DistanceMatrix(names=['Alpha', 'Beta', 'Gamma', 'Delta'], matrix=[[0], [1, 0], [2, 3, 0], [4, 5, 6, 0]])")
def construct_tree(matrix, nj=True):
"""Build a tree from a distance matrix
Can either use neighbor-joining (nj) or UPGMA.
"""
if not (matrix and type(matrix) == list and len(matrix) > 0):
print "matrix has invalid value"
return
dm = _DistanceMatrix(names=[str(i) for i in range(len(matrix))],
matrix=matrix)
constructor = DistanceTreeConstructor()
if nj:
tree = constructor.nj(dm)
else:
tree = constructor.upgma(dm)
# this will remove the names from the inner nodes
# this is critical for seq-gen to read in the tree
for clade in tree.get_nonterminals():
clade.name = ''
return tree
def test_good_construction(self):
dm = _DistanceMatrix(self.names, self.matrix)
self.assertTrue(isinstance(dm, TreeConstruction._DistanceMatrix))
self.assertEqual(dm.names[0], 'Alpha')
self.assertEqual(dm.matrix[2][1], 3)
self.assertEqual(len(dm), 4)
self.assertEqual(repr(dm), "_DistanceMatrix(names=['Alpha', 'Beta', 'Gamma', 'Delta'], matrix=[[0], [1, 0], [2, 3, 0], [4, 5, 6, 0]])")
def calcTree(ensemble, distance_matrix):
""" Given a distance matrix for an ensemble, it creates an returns a tree structure.
:arg ensemble: an ensemble with labels.
:type ensemble: prody.ensemble.Ensemble or prody.ensemble.PDBEnsemble
:arg distance_matrix: a square matrix with length of ensemble. If numbers does not mismatch
it will raise an error.
:type distance_matrix: numpy.ndarray
"""
try:
from Bio import Phylo
except ImportError:
raise ImportError('Phylo module could not be imported. '
'Reinstall ProDy or install Biopython '
'to solve the problem.')
names = ensemble.getLabels()
if len(names) != distance_matrix.shape[0] or len(
names) != distance_matrix.shape[1]:
raise ValueError("The size of matrix and ensemble has a mismatch.")
return None
matrix = []
k = 1
for row in distance_matrix:
matrix.append(list(row[:k]))
k = k + 1
from Bio.Phylo.TreeConstruction import _DistanceMatrix
dm = _DistanceMatrix(names, matrix)
constructor = Phylo.TreeConstruction.DistanceTreeConstructor()
tree = constructor.nj(dm)
for node in tree.get_nonterminals():
node.name = None
return tree
def distance_matrix(cls, cluster_list):
print cluster_list
dists = Distance.objects.filter(rep_accnum1__in=cluster_list, rep_accnum2__in=cluster_list)
distance_pairs = {g.rep_accnum1 + '_' + g.rep_accnum2: g.distance for g in dists.all()}
matrix = []
for i in range(0,len(cluster_list)):
matrix_iteration = []
for j in range(0,i+1):
if i == j:
matrix_iteration.append(0)
elif cluster_list[i] + '_' + cluster_list[j] in distance_pairs:
matrix_iteration.append(distance_pairs[cluster_list[i] + '_' + cluster_list[j]])
elif cluster_list[j] + '_' + cluster_list[i] in distance_pairs:
matrix_iteration.append(distance_pairs[cluster_list[j] + '_' + cluster_list[i]])
else:
raise("Error, can't find pair!")
matrix.append(matrix_iteration)
#print matrix_iteration
cluster_list = [s.encode('ascii', 'ignore') for s in cluster_list]
matrix_obj = _DistanceMatrix(names=cluster_list, matrix=matrix)
constructor = DistanceTreeConstructor()
tree = constructor.nj(matrix_obj)
tree.ladderize()
#Phylo.draw_ascii(tree)
output = StringIO.StringIO()
Phylo.write(tree, output, 'newick')
tree_str = output.getvalue()
#print tree_str
return tree_str
def nj_wordlist(
wordlist,
column="Value",
method=DistanceTreeConstructor.nj):
"""Create a tree using Hamming distances.
From the CLDF Dataframe `wordlist`, create a tree using a distance
method (neighbor joining, the default, or UPGMA) based on the
Hamming distance (size of the symmetric difference) of
presence/absence of the set of values in `column`.
"""
wordlist = pandas.read_csv(wordlist, sep="\t")
cogids = []
languages = []
for language, data in wordlist.groupby("Language_ID"):
languages.append(language)
cogids.append(set(data[column]))
dm = _DistanceMatrix(languages, [
[len(cogids[i] ^ cogids[j])
for j in range(i + 1)]
for i in range(len(cogids))])
constructor = DistanceTreeConstructor()
tree = method(constructor, dm)
return tree
def test_good_manipulation(self):
dm = _DistanceMatrix(self.names, self.matrix)
# getitem
self.assertEqual(dm[1], [1, 0, 3, 5])
self.assertEqual(dm[2, 1], 3)
self.assertEqual(dm[2][1], 3)
self.assertEqual(dm[1, 2], 3)
self.assertEqual(dm[1][2], 3)
self.assertEqual(dm['Alpha'], [0, 1, 2, 4])
self.assertEqual(dm['Gamma', 'Delta'], 6)
# setitem
dm['Alpha'] = [0, 10, 20, 40]
self.assertEqual(dm['Alpha'], [0, 10, 20, 40])
# delitem insert item
del dm[1]
self.assertEqual(dm.names, ['Alpha', 'Gamma', 'Delta'])
self.assertEqual(dm.matrix, [[0], [20, 0], [40, 6, 0]])
dm.insert('Beta', [1, 0, 3, 5], 1)
self.assertEqual(dm.names, self.names)
self.assertEqual(dm.matrix, [[0], [1, 0], [20, 3, 0], [40, 5, 6, 0]])
del dm['Alpha']
self.assertEqual(dm.names, ['Beta', 'Gamma', 'Delta'])
self.assertEqual(dm.matrix, [[0], [3, 0], [5, 6, 0]])
dm.insert('Alpha', [1, 2, 4, 0])
self.assertEqual(dm.names, ['Beta', 'Gamma', 'Delta', 'Alpha'])
self.assertEqual(dm.matrix, [[0], [3, 0], [5, 6, 0], [1, 2, 4, 0]])
def measure_D_net(G,qmod,qcon):
D_net_dic = {}
D_net_ret = {}
D_net = []
for u in G: D_net_dic[u] = {}
for u in sorted(G):
key1 = "Taxon" + str(u)
tmp_row = []
for v in sorted(G):
key2 = "Taxon" + str(v)
if u < v: continue
D_net_dic[u][v] = 1.0 - G.dmc_likelihood(u,v,qmod,qcon)
tmp_row.append(D_net_dic[u][v])
print D_net_dic[u][v],
D_net.append(tmp_row)
print '\n'
names = []
for u in G: names.append('Taxon'+str(u))
print names
print D_net
D_net_final = _DistanceMatrix(names,D_net)
#print D_net_final.names
constructor = DistanceTreeConstructor()
tree_dmc = constructor.upgma(D_net_final)
#print tree_dmc
Phylo.write(tree_dmc,'ph_dmc.nre','newick')
return D_net_final
def test_good_manipulation(self):
dm = _DistanceMatrix(self.names, self.matrix)
# getitem
self.assertEqual(dm[1], [1, 0, 3, 5])
self.assertEqual(dm[2, 1], 3)
self.assertEqual(dm[2][1], 3)
self.assertEqual(dm[1, 2], 3)
self.assertEqual(dm[1][2], 3)
self.assertEqual(dm['Alpha'], [0, 1, 2, 4])
self.assertEqual(dm['Gamma', 'Delta'], 6)
# setitem
dm['Alpha'] = [0, 10, 20, 40]
self.assertEqual(dm['Alpha'], [0, 10, 20, 40])
# delitem insert item
del dm[1]
self.assertEqual(dm.names, ['Alpha', 'Gamma', 'Delta'])
self.assertEqual(dm.matrix, [[0], [20, 0], [40, 6, 0]])
dm.insert('Beta', [1, 0, 3, 5], 1)
self.assertEqual(dm.names, self.names)
self.assertEqual(dm.matrix, [[0], [1, 0], [20, 3, 0], [40, 5, 6, 0]])
del dm['Alpha']
self.assertEqual(dm.names, ['Beta', 'Gamma', 'Delta'])
self.assertEqual(dm.matrix, [[0], [3, 0], [5, 6, 0]])
dm.insert('Alpha', [1, 2, 4, 0])
self.assertEqual(dm.names, ['Beta', 'Gamma', 'Delta', 'Alpha'])
self.assertEqual(dm.matrix, [[0], [3, 0], [5, 6, 0], [1, 2, 4, 0]])
def dm_to_tree(dm):
dm = dm.astype(float)
distance_triangular = [list(dm.values[i, : i + 1]) for i in range(len(dm))]
try:
dm = _DistanceMatrix(names=[str(i) for i in dm.columns], matrix=distance_triangular)
except Exception, e:
print list(dm.columns)
print [type(i) for i in dm.columns]
def construct_tree(X_2d, acc, title):
acc = list(acc)
data = pairwise_distances(X_2d).astype('float')
data[np.isnan(data)] = 0
data_list = []
for i in range(data.shape[0]):
#for j in range(i, data.shape[0]):
data_list.append([data[i, j] for j in range(0, i+1)])
data = data_list
dm = _DistanceMatrix(acc, matrix=data)
constructor = DistanceTreeConstructor()
tree = constructor.nj(dm)
Phylo.write(tree, title + ".nwk", 'newick')
def dm_to_tree(dm):
dm = dm.astype(float)
distance_triangular = [list(dm.values[i, :i + 1]) for i in range(len(dm))]
try:
dm = _DistanceMatrix(names=[str(i) for i in dm.columns],
matrix=distance_triangular)
except Exception, e:
print list(dm.columns)
print[type(i) for i in dm.columns]
print type(distance_triangular)
print type(distance_triangular[0])
print set([str(type(i)) for j in distance_triangular for i in j])
print distance_triangular
raise e
def lower_tri(full_matrix):
'''
Take a symmetrical matrix, convert it to a lower triangle _Matrix object.
'''
lower_triangle = []
names = []
k = 2
for i in full_matrix:
lower_triangle.append(list(map(float, i[1:k])))
names.append(i[0])
k += 1
from Bio.Phylo.TreeConstruction import _DistanceMatrix
matrix = _DistanceMatrix(names, lower_triangle)
return matrix
def lower_tri(full_matrix):
'''
Take a symmetrical matrix, convert it to a lower triangle _Matrix object.
'''
lower_triangle = []
names = []
k = 2
for i in full_matrix:
lower_triangle.append(list(map(float, i[1:k])))
names.append(i[0])
k += 1
from Bio.Phylo.TreeConstruction import _DistanceMatrix
matrix = _DistanceMatrix(names, lower_triangle)
return matrix
def construct_tree(align, ssr_regions, motifs, weights=[1, 0.1]):
"""
Construct an upgma tree based on a pairwise Levenshtein distance matrix.
For each pairwise comparison, the Levenshtein distances are calculated
for sequences of non-SSR and SSR regions separately, and the weighted
sum of them are used as the distance to construct an upgma tree. By default,
weights for non-SSR and SSR regions are 1 and 0.1, respectively. In SSR
regions, one repeat difference is considered to be one edit distance.
Parameters
----------
align: Bio.AlignIO.MultipleSeqAlignment
input sequence alignment
ssr_regions: list of tuple
start and end positions of SSR regions in the alignment
motifs: list
repeat motifs
weights: list
weights for non-SSR and SSR regions to culculate pairwise distances
(default: [1, 0.1])
"""
non_ssr_seqs = []
ssr_seqs = []
for a in align:
seq = str(a.seq.upper())
ssr_idx = np.array(list(chain(*[list(range(*x))
for x in ssr_regions])))
non_ssr_idx = list(set(range(len(seq))) - set(ssr_idx))
seq_arr = np.array(list(seq))
non_ssr_seq = "".join(seq_arr[non_ssr_idx])
non_ssr_seqs.append(non_ssr_seq)
ssr_seq = ""
for rr, mot in zip(ssr_regions, motifs):
ssr_seq += seq[rr[0]:rr[1]].replace("-", "").replace(mot, "x")
ssr_seqs.append(ssr_seq)
mat1 = pairwise_dist_Levenstein(non_ssr_seqs)
mat2 = pairwise_dist_Levenstein(ssr_seqs)
mat = [
list(np.array(i) * weights[0] + np.array(j) * weights[1])
for i, j in zip(mat1, mat2)
]
names = ["seq{}".format(i) for i in range(len(align))]
dmat = _DistanceMatrix(names, mat)
constructor = DistanceTreeConstructor()
return constructor.upgma(dmat)
def create_distance_matrix(strainList, strainDict):
print "Calculating distance matrix"
matrix = []
for i in range(1, len(strainList) + 1):
matrix.append([0] * i)
dm = _DistanceMatrix(strainList, matrix)
for a in range(len(strainList)):
for b in range(a, len(strainList)):
strA = strainList[a]
strB = strainList[b]
genA = strainDict[strA]
genB = strainDict[strB]
dm[strA, strB] = calc_dist(len(genA), len(genB), len(genA & genB))
print "Done calculating distance matrix"
return dm
def create_distance_matrix(strainList, strainDict):
print "Calculating distance matrix"
matrix = []
for i in range(1, len(strainList) + 1):
matrix.append([0]*i)
dm = _DistanceMatrix(strainList, matrix)
for a in range(len(strainList)):
for b in range(a, len(strainList)):
strA = strainList[a]
strB = strainList[b]
genA = strainDict[strA]
genB = strainDict[strB]
dm[strA, strB] = calc_dist(len(genA), len(genB), len(genA & genB))
print "Done calculating distance matrix"
return dm
def build_guide_trees(distance_matrix):
# build distance matrix biopython object
matrix = [distance_matrix[i, :i + 1].tolist() for i in range(len(distance_matrix))]
names = ['S' + str(i) for i in range(len(distance_matrix))]
dm = _DistanceMatrix(names, matrix)
print('Constructed matrix')
constructor = DistanceTreeConstructor()
# construct neighbour joining tree
t = time.time()
tree = constructor.nj(dm)
print('Constructed nj tree in {:.4f}s'.format(time.time() - t))
Phylo.write(tree, "njtree.dnd", "newick")
remove_inner_nodes_tree("njtree.dnd")
"""
def test_correct_res(self):
dist_matrix = pd.read_csv("data/wiki_tree.csv", index_col=0)
self.tree.set_distance_matrix(dist_matrix)
self.tree.fit()
dist_matrix = _DistanceMatrix(names=['a', 'b', 'c', 'd', 'e'],
matrix=[[0], [5, 0], [9, 10, 0],
[9, 10, 8, 0], [8, 9, 7, 3, 0]])
constructor = DistanceTreeConstructor()
lib_tree = constructor.nj(dist_matrix)
self.assertTrue(
is_isomorphic(
Phylo.to_networkx(lib_tree).to_undirected(),
Phylo.to_networkx(self.tree.get_tree()).to_undirected()))
def main():
### Main Arg Parse ###
parser = argparse.ArgumentParser(description="Fast tree builder v1")
parser.add_argument('-i','--input',help="Input list of assembly paths")
parser.add_argument('-t','--threads',help="Threads for mash)",default="1")
args = vars(parser.parse_args())
start_time = time.time()
temp_dir = tempfile.mkdtemp()
genome_list = args["input"] # List of assembly paths
with open(genome_list) as f:
input_data = f.read().strip().split("\n")
threads = args["threads"]
mash_matrix = make_mash_matrix(input_data,temp_dir,threads)
# with open("test_out.txt","w") as f:
# f.write(mash_matrix)
i=2
matrix = []
names = []
firstLine = True
mash_matrix_lines = mash_matrix.split("\n")
for line in mash_matrix_lines:
if line.strip() != "":
if firstLine:
current_names = line.split("\t")
for obj in current_names:
if len(obj) > 0:
names.append(obj)
firstLine = False
else:
sub_matrix = []
values = line.split("\t")
for q in range(1,i):
val = float(values[q])
sub_matrix.append(val)
matrix.append(sub_matrix)
i+=1
#print(names,len(names))
#print(len(names),len(matrix))
print("building tree")
dm = _DistanceMatrix(names,matrix)
constructor = DistanceTreeConstructor(method="nj")
tree = constructor.nj(dm)
unique_time = str(time.time()).split(".")[1]
Phylo.write([tree],"my_tree_{}.tree".format(unique_time),"newick")
def calcTree(names, distance_matrix, method='nj'):
""" Given a distance matrix for an ensemble, it creates an returns a tree structure.
:arg names: an list of names
:type names: list, :class:`~numpy.ndarray`
:arg distance_matrix: a square matrix with length of ensemble. If numbers does not match *names*
it will raise an error
:type distance_matrix: :class:`~numpy.ndarray`
"""
try:
from Bio import Phylo
except ImportError:
raise ImportError('Phylo module could not be imported. '
'Reinstall ProDy or install Biopython '
'to solve the problem.')
if len(names) != distance_matrix.shape[0] or len(
names) != distance_matrix.shape[1]:
raise ValueError("Mismatch between the sizes of matrix and names.")
matrix = []
k = 1
for row in distance_matrix:
matrix.append(list(row[:k]))
k = k + 1
from Bio.Phylo.TreeConstruction import _DistanceMatrix
if isinstance(names, np.ndarray):
names = names.tolist()
dm = _DistanceMatrix(names, matrix)
constructor = Phylo.TreeConstruction.DistanceTreeConstructor()
method = method.strip().lower()
if method == 'nj':
tree = constructor.nj(dm)
elif method == 'upgma':
tree = constructor.upgma(dm)
else:
raise ValueError('Method can be only either "nj" or "upgma".')
for node in tree.get_nonterminals():
node.name = None
return tree
def bootstrap(ps,
jobID,
basename='majorityTree',
treebuilder='nj',
bootstraps=1,
outgroup=None):
"""treebuilder could be nj/upgma, outgroup: a population name or 'midpoint'"""
allLoci = set()
for pop in ps.populations:
allLoci = allLoci.union(pop.allpolySites)
allLoci = list(
allLoci
) ## sort it? Reduce to independent sites (www.pnas.org/content/93/23/13429, run LD?)
sites = len(allLoci)
trees = []
for bootstrap in range(bootstraps):
selectedLoci0 = np.random.choice(range(len(allLoci)),
sites,
replace=True)
selectedLoci = [allLoci[l] for l in selectedLoci0]
df = pd.DataFrame(
[pop.bootstrap(selectedLoci) for pop in ps.populations],
index=ps.popnames)
dmNei = neiDF(df, [5] * (sites - 1))
## annoying conversion, BioPython couldnt be just more compatible with scipy/pdist?
dmTriangular = [list(dmNei[i, :(i + 1)]) for i in range(len(dmNei))]
try:
m = _DistanceMatrix(ps.popnames, dmTriangular)
except ValueError:
pdb.set_trace()
constructor = DistanceTreeConstructor(
) # could've passed treebuilder here too
tree = getattr(constructor, treebuilder)(m)
if outgroup == 'midpoint':
tree.root_at_midpoint()
elif not outgroup is None:
tree.root_with_outgroup({'name': outgroup})
trees.append(tree)
filename = '../Data/%s_%s_%s_%s_%04d.pcl' % (
basename, bootstraps, treebuilder, len(ps.populations), jobID)
with open(filename, "wb") as w:
pickle.dump(trees, w)
def bootstrap(self, afbased=True, basename='majorityTree', treebuilder='nj', bootstraps=1000, outgroup=None, useAllLoci=False):
"""treebuilder could be nj/upgma, outgroup: a population name or 'midpoint'"""
## allLoci: all loci that are variable in at least one population
allpolySites, pwm = {True: ['allpolySites', 'pwm'],
False: ['allpolySitesVCF', 'pwmVCF']}[afbased]
allLoci = set()
for pop in self.populations:
allLoci = allLoci.union(getattr(pop, allpolySites))
allLoci = list(allLoci) ## sort it? Reduce to independent sites (www.pnas.org/content/93/23/13429, run LD?)
sites = len(allLoci)
trees = []
print ("Bootstrapping, rounds:", end=' ')
for bootstrap in range(bootstraps): ## see also parallelized version
print(bootstrap, end=' ')
if useAllLoci:
selectedLoci = allLoci
else:
selectedLoci0 = np.random.choice(range(len(allLoci)), sites, replace=True)
selectedLoci = [allLoci[l] for l in selectedLoci0]
df = pd.DataFrame([pop.bootstrap(selectedLoci, afbased) for pop in self.populations], index=self.popnames)
#import pdb; pdb.set_trace()
self.dmNei = neiDF(df, [5]*(sites-1))
## annoying conversion, BioPython couldnt be just more compatible with scipy/pdist?
dmTriangular = [list(self.dmNei[i, :(i + 1)]) for i in range(len(self.dmNei))]
m = _DistanceMatrix(self.popnames, dmTriangular)
constructor = DistanceTreeConstructor() # could've passed treebuilder here too
tree = getattr(constructor, treebuilder)(m)
if outgroup == 'midpoint':
tree.root_at_midpoint()
elif not outgroup is None:
tree.root_with_outgroup({'name': outgroup})
trees.append(tree) ## use nj!
## debug info:
print(f'selectedLoci: {selectedLoci[:30]}')
## see https://biopython.org/wiki/Phylo, turned out to be more suitable than dendropy/sumtrees
self.majorityTree = Consensus.majority_consensus(trees) ## also consider strict_consensus and adam_consensus (but they don't have bootstrap support values)
treefile = '%s/%s_%s_%s_%s.nwk' %(resultDir, basename, bootstraps,treebuilder, len(self.populations))
Phylo.write(self.majorityTree, treefile, format='newick')
print(f'wrote {treefile}')
Phylo.draw_ascii(self.majorityTree)
def build_phylo_tree(file_name_pair_dist): #to return total branch lenght
file_pair_dist = file_name_pair_dist #all.reciprocal
pair_dist = commands.getoutput("cut -f1,2,3 " + file_pair_dist +
" ") #need to delete header of the table
pair_dist = pair_dist.split('\n')
list_genome = commands.getoutput("awk '{print $1}{print $2}' " +
file_pair_dist + " |sort -g|uniq")
list_genome = list_genome.split('\n')
#print 'Total genomes >> ',len(list_genome)
Total_genomes = len(list_genome)
#print 'Total pair distance >> ',(len(list_genome)*(len(list_genome)-1))/2
Total_pair_distance = (len(list_genome) * (len(list_genome) - 1)) / 2
check1 = False
if len(pair_dist) == (
len(list_genome) *
(len(list_genome) - 1)) / 2: #To check the number of pair distance
#print 'Pass check 1 : total pair distances are correctly found '
check1 = True
matrix = []
for n in range(1, len(list_genome) + 1):
matrix.append([0] * n)
#print matrix
Total_metrix = len(matrix)
#print 'Total matrix >>',len(matrix)
Ds = _DistanceMatrix(list_genome, matrix)
for pair in pair_dist:
i = pair.split()
#print i
Ds[i[0], i[1]] = float(i[2])
#print Ds
constructor = DistanceTreeConstructor()
tree = constructor.nj(Ds)
#print (tree) #for visualization
#Phylo.draw(tree, branch_labels=lambda c: c.branch_length)
print 'total_branch_length >> ', tree.total_branch_length()
return Total_genomes, Total_pair_distance, check1, tree.total_branch_length(
)
def test_bad_manipulation(self):
dm = _DistanceMatrix(self.names, self.matrix)
# getitem
self.assertRaises(ValueError, dm.__getitem__, 'A')
self.assertRaises(ValueError, dm.__getitem__, ('Alpha', 'A'))
self.assertRaises(TypeError, dm.__getitem__, (1, 'A'))
self.assertRaises(TypeError, dm.__getitem__, (1, 1.2))
self.assertRaises(IndexError, dm.__getitem__, 6)
self.assertRaises(IndexError, dm.__getitem__, (10, 10))
# setitem: item or index test
self.assertRaises(ValueError, dm.__setitem__, 'A', [1, 3, 4])
self.assertRaises(ValueError, dm.__setitem__, ('Alpha', 'A'), 4)
self.assertRaises(TypeError, dm.__setitem__, (1, 'A'), 3)
self.assertRaises(TypeError, dm.__setitem__, (1, 1.2), 2)
self.assertRaises(IndexError, dm.__setitem__, 6, [1, 3, 4])
self.assertRaises(IndexError, dm.__setitem__, (10, 10), 1)
# setitem: value test
self.assertRaises(ValueError, dm.__setitem__, 0, [1, 2])
self.assertRaises(TypeError, dm.__setitem__, ('Alpha', 'Beta'), 'a')
self.assertRaises(TypeError, dm.__setitem__, 'Alpha', ['a', 'b', 'c'])
def test_bad_manipulation(self):
dm = _DistanceMatrix(self.names, self.matrix)
#getitem
self.assertRaises(ValueError, dm.__getitem__, 'A')
self.assertRaises(ValueError, dm.__getitem__, ('Alpha', 'A'))
self.assertRaises(TypeError, dm.__getitem__, (1, 'A'))
self.assertRaises(TypeError, dm.__getitem__, (1, 1.2))
self.assertRaises(IndexError, dm.__getitem__, 6)
self.assertRaises(IndexError, dm.__getitem__, (10, 10))
#setitem: item or index test
self.assertRaises(ValueError, dm.__setitem__, 'A', [1, 3, 4])
self.assertRaises(ValueError, dm.__setitem__, ('Alpha', 'A'), 4)
self.assertRaises(TypeError, dm.__setitem__, (1, 'A'), 3)
self.assertRaises(TypeError, dm.__setitem__, (1, 1.2), 2)
self.assertRaises(IndexError, dm.__setitem__, 6, [1, 3, 4])
self.assertRaises(IndexError, dm.__setitem__, (10, 10), 1)
#setitem: value test
self.assertRaises(ValueError, dm.__setitem__, 0, [1, 2])
self.assertRaises(TypeError, dm.__setitem__, ('Alpha', 'Beta'), 'a')
self.assertRaises(TypeError, dm.__setitem__, 'Alpha', ['a', 'b', 'c'])
def distance_matrix(cls, cluster_list):
print cluster_list
dists = Distance.objects.filter(rep_accnum1__in=cluster_list,
rep_accnum2__in=cluster_list)
distance_pairs = {
g.rep_accnum1 + '_' + g.rep_accnum2: g.distance
for g in dists.all()
}
matrix = []
for i in range(0, len(cluster_list)):
matrix_iteration = []
for j in range(0, i + 1):
if i == j:
matrix_iteration.append(0)
elif cluster_list[i] + '_' + cluster_list[j] in distance_pairs:
matrix_iteration.append(
distance_pairs[cluster_list[i] + '_' +
cluster_list[j]])
elif cluster_list[j] + '_' + cluster_list[i] in distance_pairs:
matrix_iteration.append(
distance_pairs[cluster_list[j] + '_' +
cluster_list[i]])
else:
raise ("Error, can't find pair!")
matrix.append(matrix_iteration)
#print matrix_iteration
cluster_list = [s.encode('ascii', 'ignore') for s in cluster_list]
matrix_obj = _DistanceMatrix(names=cluster_list, matrix=matrix)
constructor = DistanceTreeConstructor()
tree = constructor.nj(matrix_obj)
tree.ladderize()
#Phylo.draw_ascii(tree)
output = StringIO.StringIO()
Phylo.write(tree, output, 'newick')
tree_str = output.getvalue()
#print tree_str
return tree_str
def get_local_tree(chrom,
start,
end,
vcf_fn,
samples=None,
outgroup=None,
plot=False):
pwd = hap.get_pairwise_diff(vcf_fn,
chrom=chrom,
start=start,
end=end,
samples=samples,
chunksize=30000)
distance_triangular = [
list(pwd.values[i, :i + 1]) for i in range(len(pwd))
]
dm = _DistanceMatrix(names=list(pwd.columns), matrix=distance_triangular)
constructor = DistanceTreeConstructor()
tree = constructor.nj(dm)
if outgroup is not None:
tree.root_with_outgroup(outgroup)
tree.ladderize()
for t in tree.get_nonterminals():
t.name = None
tree_no = copy.deepcopy(tree)
if outgroup is not None:
tree_no.prune(outgroup)
#tree_no.prune('AstTwe1')
#tree_no.prune('SerRob1')
if plot:
fig = plt.figure(figsize=(15, 50))
ax = plt.gca()
Phylo.draw(tree_no, axes=ax, do_show=False)
ax.spines['left'].set_visible(False)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
ax.set_yticks([])
ax.set_ylabel('')
return pwd, tree
def build_tree(dist_matrix, names_list, clust):
tree = None
if clust == 'nj':
# print(dist_matrix)
dm = DistanceMatrix(dist_matrix, names_list)
tree_scikit = nj(dm,result_constructor=str)
tree = Tree(tree_scikit)
elif clust == 'upgma':
dm = _DistanceMatrix(names=names_list, matrix=condense_matrix(dist_matrix))
constructor = DistanceTreeConstructor()
tree_biopython = constructor.upgma(dm)
# remove InnerNode names
for i in tree_biopython.get_nonterminals():
i.name = None
output = StringIO()
Phylo.write(tree_biopython,output, "newick")
tree = Tree(output.getvalue())
else:
print("Unknown tree clustering method ! Aborting")
sys.exit()
return tree
def ParseMatrix(filename):
mat_names = [] # FASTA headers
mat_names_num = []
lt_matrix = [] #lower triangular matrix
with open(filename, 'rU') as MAT:
for l in MAT:
l = l.strip('\n')
if len(l) == 0:
continue
elif l[0] == '>':
mat_names.append(l[1:])
else:
lt_matrix.append([float(i) for i in l.split()])
#Switch to integer headers and print Mapping file
with open(args.out + '.map', 'w') as MAP:
for index, name in enumerate(mat_names):
MAP.write(str(index) + '\t' + name + '\n')
mat_names_num.append(str(index))
#Fill into Biopython distmat Data Structures
dist_matrix = _DistanceMatrix(names=mat_names_num, matrix=lt_matrix)
return dist_matrix
def build_tree(dist_matrix, names_list, clust):
tree = None
if clust == 'nj':
# print(dist_matrix)
dm = DistanceMatrix(dist_matrix, names_list)
tree_scikit = nj(dm, result_constructor=str)
tree = Tree(tree_scikit)
elif clust == 'upgma':
dm = _DistanceMatrix(names=names_list,
matrix=condense_matrix(dist_matrix))
constructor = DistanceTreeConstructor()
tree_biopython = constructor.upgma(dm)
# remove InnerNode names
for i in tree_biopython.get_nonterminals():
i.name = None
output = StringIO()
Phylo.write(tree_biopython, output, "newick")
tree = Tree(output.getvalue())
else:
print("Unknown tree clustering method ! Aborting")
sys.exit()
return tree
def D_F_matrix(D_Seq,D_net,final_tree):
names_Seq = D_Seq.names
names_Net = D_net.names
D_F = []
D_F_names = []
for key1 in names_Net:
i = names_Net.index(key1)
#print key1
temp_row = []
for j in range(0,i+1):
key2 = names_Net[j]
#print key2,
if key1 in names_Net and key2 in names_Seq:
if not key1 in D_F_names:
D_F_names.append(key1)
i1 = names_Net.index(key1)
j2 = names_Net.index(key2)
new_val = (0.5*D_net[key1,key2] + 0.5*D_Seq[key1,key2])
#print new_val,
temp_row.append(new_val)
#print temp_row
D_F.append(temp_row)
print D_F
D_F_final = _DistanceMatrix(D_F_names,D_F)
constructor = DistanceTreeConstructor()
tree_D_F = constructor.upgma(D_F_final)
#print tree_dmc
Phylo.write(tree_D_F,final_tree,'newick')
return D_F_final
def D_F_matrix(D_Seq,D_net,final_tree, alpha):
names_Seq = D_Seq.names
names_Net = D_net.names
D_F = []
D_F_names = []
for key1 in names_Net:
i = names_Net.index(key1)
#print key1
temp_row = []
for j in range(0,i+1):
key2 = names_Net[j]
#print key2,
if key1 in names_Net and key2 in names_Seq:
if not key1 in D_F_names:
D_F_names.append(key1)
i1 = names_Net.index(key1)
j2 = names_Net.index(key2) # should be 1-alpha * D_net and alpha * D_seq
new_val = ((1-alpha) * D_net[key1,key2]) + (alpha * D_Seq[key1,key2]) # alpha can be set to any value (between 0 and 1)
#print new_val, # we can change alpha to choose how much of D_Seq and D_net we want to use
temp_row.append(new_val)
#print temp_row
D_F.append(temp_row)
print D_F
D_F_final = _DistanceMatrix(D_F_names,D_F)
constructor = DistanceTreeConstructor()
tree_D_F = constructor.upgma(D_F_final)
#print tree_dmc
Phylo.write(tree_D_F,final_tree,'newick')
return D_F_final
def build_tree(languages, lang_dist):
'''
Builds a tree and prints it to a specified location.
'''
print """
Where should the Tree be Printed:
(1) Console
(2) Text File
(3) Both
"""
user_in = input()
#Build and print the tree
if user_in > 0 and user_in < 4:
#decode the strings in languages
for i in range(len(languages)):
languages[i] = codecs.encode(languages[i], 'utf-8')
#get the lower triangle matrix format
for i in range(len(lang_dist)):
lang_dist[i] = lang_dist[i][:i + 1]
dist_matrix = _DistanceMatrix(languages, lang_dist)
tree_constructor = DistanceTreeConstructor()
upgma_tree = tree_constructor.upgma(dist_matrix)
neighbor_tree = tree_constructor.nj(dist_matrix)
if not upgma_tree is None and not neighbor_tree is None:
#Draw to the console
if user_in == 1:
print "upgma tree:\n"
Phylo.draw_ascii(upgma_tree)
Phylo.draw(upgma_tree)
print "\nneighbor joining tree:\n"
Phylo.draw_ascii(neighbor_tree)
#draw to the files only
elif user_in == 2:
with open(r"reports/language_distances/upgma_tree.txt",
'w') as f:
# f.write(str(upgma_tree))
Phylo.draw_ascii(upgma_tree, f)
with open(r"reports/language_distances/neighbor_tree.txt",
'w') as f:
# f.write(str(neighbor_tree))
Phylo.draw_ascii(neighbor_tree, f)
#draw to the files and the console
elif user_in == 3:
print "upgma tree:\n"
Phylo.draw_ascii(upgma_tree)
print "\nneighbor joining tree:\n"
Phylo.draw_ascii(neighbor_tree)
with open(r"reports/language_distances/upgma_tree.txt",
'w') as f:
# f.write(str(upgma_tree))
Phylo.draw_ascii(upgma_tree, f)
with open(r"reports/language_distances/neighbor_tree.txt",
'w') as f:
# f.write(str(neighbor_tree))
Phylo.draw_ascii(neighbor_tree, f)
else:
print "Run a comparison to generate the distance matrix first\n"
else:
print "That is not a valid option. Please choose a valid option\n"
from Bio import Phylo
from Bio.Phylo.TreeConstruction import _DistanceMatrix
from Bio.Phylo.TreeConstruction import DistanceTreeConstructor
from io import StringIO
import re
# hamming distance
def hamming(seq1, seq2):
# assert len(seq1) == len(seq2), 'unequal reads!'
return int(sum([i[0] != i[1] for i in zip(seq1, seq2)]))
f = open('rosalind_chbp.txt')
species = f.readline().rstrip().split()
table = [''.join(i) for i in zip(*f.read().rstrip().split())]
n = len(table)
'''
For the Phylo.TreeConstruction to work, integers in the distance matrix
must be Python int and not numpy.int64
'''
dm = [[hamming(table[i], table[j]) for j in range(i+1)] for i in range(n)]
constructor = DistanceTreeConstructor()
tree = constructor.nj(_DistanceMatrix(names=species, matrix=dm))
handle = StringIO()
Phylo.write(tree, handle, format='newick', plain=True)
result = handle.getvalue()
result = re.sub('Inner[0-9]+', '', result)
open('rosalind_chbp_sub.txt', 'wt').write(result)
l += 1
dist = {}
with open(blasttable) as b:
for ln in b.read().splitlines():
s = ln.split("\t")
if s[0] not in dist:
dist[s[0]] = {}
dist[s[0]][s[1]] = 1-float(s[2])
## Distance matrix
dist_score_assembly_line = generate_distance_matrix(pathways, domain_names, annotation,
dist, Jaccardw, GKw, DDSw, AIw,
scale=1, nbhood=3, outfile=outfile)
#-- Plot the tree
names = pathways.keys()
score = [s for s in open(outfile, 'r').read().split('\n')[1:] if s != '']
matrix = []
for i in range(len(score)):
input_i = score[i].split(',')[1:(i+2)]
input_i_int = [float(n) for n in input_i]
matrix.append(input_i_int)
m = _DistanceMatrix(names, matrix)
constructor = DistanceTreeConstructor()
tree1 = constructor.upgma(m)
#Bio.Phylo.draw_ascii(tree1)
Bio.Phylo.write(tree1, tree_outfile, 'newick')
if((i-1)==j):
row.append(0)
else:
row.append(np.linalg.norm(scaled_ps[j]-scaled_ps[i-1]))
dist_mat.append(row)
return dist_mat
if __name__ == "__main__":
names = []
sequences = []
with open("kmercoded.fasta", "r") as handle:
for record in SeqIO.parse(handle, "fasta"):
seq = record.seq
N = len(seq)
c = Counter(seq)
if(c['$']==N):
continue
names.append(record.description)
sequences.append(record.seq)
pspec = power_spectrum(sequences)
scaled_ps = linear_scaling(pspec) #cubic_scaling(pspec)
dist_mat = get_euclidean_distance(scaled_ps)
constructor = DistanceTreeConstructor()
distance_matrix_10 = _DistanceMatrix(names=names[0:10], matrix=dist_arr[0:10])
tree_upgma_10 = constructor.upgma(distance_matrix_10)
Phylo.draw(tree_upgma_10)
tree_nj_10 = constructor.nj(distance_matrix_10)
Phylo.draw(tree_nj_10)
def compute_tree(options, mat, names):
""" make upgma hierarchical clustering and write it as png and
graphviz dot
"""
# oops, convert to biopython matrix
matrix = []
for i in xrange(len(names)):
row = []
for j in xrange(i + 1):
# tree constructor writes 0-distances as 1s for some reason
# so we hack around here
val = float(mat[names[i]][names[j]])
if val == 0.:
val = 1e-10
elif val == 1.:
val = 1.1
row.append(val)
matrix.append(row)
dm = _DistanceMatrix(names, matrix)
# upgma tree
constructor = DistanceTreeConstructor()
tree = constructor.upgma(dm)
robust_makedirs(os.path.dirname(tree_path(options)))
Phylo.write(tree, tree_path(options), "newick")
# png tree -- note : doesn't work in toil
def f(x):
if "Inner" in str(x):
return ""
else:
return x
Phylo.draw_graphviz(tree, label_func = f, node_size=1000, node_shape="s", font_size=10)
pylab.savefig(tree_path(options).replace("newick", "png"))
# graphviz
# get networkx graph
nxgraph = Phylo.to_networkx(tree)
# make undirected
nxgraph = nx.Graph(nxgraph)
# push names to name labels
nxgraph = nx.convert_node_labels_to_integers(nxgraph, label_attribute="label")
for node_id in nxgraph.nodes():
node = nxgraph.node[node_id]
if "Inner" in str(node["label"]):
node["label"] = "\"\""
node["width"] = 0.001
node["height"] = 0.001
else:
node["fontsize"] = 18
for edge_id in nxgraph.edges():
edge = nxgraph.edge[edge_id[0]][edge_id[1]]
# in graphviz, weight means something else, so make it a label
weight = float(edge["weight"])
# undo hack from above
if weight > 1:
weight = 1.
if weight <= 1e-10 or weight == 1.:
weight = 0.
edge["weight"] = None
edge["label"] = "{0:.3g}".format(float(weight) * 100.)
edge["fontsize"] = 14
edge["len"] = draw_len(weight)
nx.write_dot(nxgraph, tree_path(options).replace("newick", "dot"))
def generate_tree_dendro(G_ref,H,outfile):
length = len(H)
length = length - 2
'''
tree = dendropy.Tree(stream=StringIO.StringIO(str(H[length])),schema="newick")
for i in range(length-1,-1,-1):
(u,v) = H[i]
temp_tree = dendropy.Tree(stream=StringIO.StringIO(str(H[i])),schema="newick")
current_parent = filter(lambda x: x.taxon.label == str(u), [y for y in tree.leaf_nodes()])
temp_tree_nodes = [x for x in temp_tree.nodes()]
current_parent[0].add_child(temp_tree_nodes[1])
current_parent[0].add_child(temp_tree_nodes[2])
print(tree.as_ascii_plot())
'''
(u,v) = H[length]
counter = 1
#[999]((Taxon1:0.3,Taxon2:0.14):0.5,(Taxon3:0.34, Taxon4:0.5):0.12);
string_root = "(" + "Taxon" + str(u) + ":" + str(1) + "," + "Taxon" + str(v) + ":" + str(1) + ")"
tree = dendropy.Tree(stream=StringIO.StringIO(string_root),schema="newick")
for i in range(length-1,-1,-1):
(u,v) = H[i]
string_temp = "(" + "Taxon" + str(u) + ":" + str(1) + "," + "Taxon" + str(v) + ":" + str(1) + ")"
temp_tree = dendropy.Tree(stream=StringIO.StringIO(string_temp),schema="newick")
current_parent = filter(lambda x: x.taxon.label == "Taxon" + str(u), [y for y in tree.leaf_nodes()])
temp_tree_nodes = [x for x in temp_tree.nodes()]
current_parent[0].add_child(temp_tree_nodes[1])
current_parent[0].add_child(temp_tree_nodes[2])
current_parent[0].taxon.label = current_parent[0].oid
#print tree
out = tree.as_string('newick')
pdm = treecalc.PatristicDistanceMatrix(tree)
T = [t1 for i, t1 in enumerate(tree.taxon_set)]
T.sort(key=lambda x: x.label)
out = out.replace('[&U]','[50]') ## 50 unit long sequences
open(outfile,'w').write(out) # The first T produced by the history
print(tree.as_ascii_plot())
print "New tree data structure"
D_net_dic = {}
D_net_ret = {}
D_net = []
for u in G_ref: D_net_dic[u] = {}
for u in sorted(G_ref):
print "size"
key1 = "Taxon" + str(u)
tmp_row = []
for v in sorted(G_ref):
key2 = "Taxon" + str(v)
if u < v: continue
D_net_dic[u][v] = 1.0 / (pdm(T[int(u)-1],T[int(v)-1])+1)
tmp_row.append(D_net_dic[u][v])
print D_net_dic[u][v],
D_net.append(tmp_row)
print '\n'
names = []
for u in G_ref: names.append('Taxon'+str(u))
print names
print D_net
D_net_final = _DistanceMatrix(names,D_net)
return D_net_final
def dmc_delorean_plain(G,G_ref,qmod,qcon,outfile):
""" Reconstructs the network using the dmc model and delorean algorithm. """
# Make initial pairwise likelihoods.
#target = open(hisfile,'w')
global H1
L = {}
for u in G: L[u] = {}
for u in G:
for v in G:
if u >= v: continue
L[u][v] = G.dmc_likelihood(u,v,qmod,qcon)
level_counter = 0
while (G.num_nodes >= 2): # at least two nodes in the graph.
# Get largest Luv.
L_list = []
L_prob = -10000000000
for u in G:
for v in G:
if u >= v: continue
Luv = L[u][v]
if Luv > L_prob:
L_list = [(u,v)]
L_prob = Luv
elif Luv == L_prob:
L_list.append((u,v))
# Choose random pair; assign random daddy.
pair = random.choice(L_list)
(u,v) = (pair[0],pair[1]) if random.random() > 0.5 else (pair[1],pair[0])
# Nodes whose likelihood values need to be computed.
altered = (G.neighbors(u) | G.neighbors(v) | set([u])) - set([v])
# Prepare to delete v: add new edges in symmetric difference of v to u.
for neighbor in G.neighbors(v):
if u == neighbor: continue # Don't add self-edge.
elif v == neighbor: continue # Don't add, will remove v anyways.
elif G.has_edge(u,neighbor): continue # Edge already exists.
else: G.add_edge(u,neighbor)
G.remove_node(v)
H1.append((u,v))
print "%s\t%s" %(u,v)
# Fix up altered Luv values.
for x in altered:
for y in G:
if x == y: continue
L[min(x,y)][max(x,y)] = G.dmc_likelihood(x,y,qmod,qcon)
last_node = G.nodes()[0]
H1.append((last_node,last_node))
print "%s\t%s" %(last_node,last_node)
length = len(H1)
length = length - 2
'''
tree = dendropy.Tree(stream=StringIO.StringIO(str(H[length])),schema="newick")
for i in range(length-1,-1,-1):
(u,v) = H[i]
temp_tree = dendropy.Tree(stream=StringIO.StringIO(str(H[i])),schema="newick")
current_parent = filter(lambda x: x.taxon.label == str(u), [y for y in tree.leaf_nodes()])
temp_tree_nodes = [x for x in temp_tree.nodes()]
current_parent[0].add_child(temp_tree_nodes[1])
current_parent[0].add_child(temp_tree_nodes[2])
print(tree.as_ascii_plot())
'''
(u,v) = H1[length]
counter = 1
#[999]((Taxon1:0.3,Taxon2:0.14):0.5,(Taxon3:0.34, Taxon4:0.5):0.12);
string_root = "(" + "Taxon" + str(u) + ":" + str(1) + "," + "Taxon" + str(v) + ":" + str(1) + ")"
tree = dendropy.Tree(stream=StringIO.StringIO(string_root),schema="newick")
for i in range(length-1,-1,-1):
(u,v) = H1[i]
string_temp = "(" + "Taxon" + str(u) + ":" + str(1) + "," + "Taxon" + str(v) + ":" + str(1) + ")"
temp_tree = dendropy.Tree(stream=StringIO.StringIO(string_temp),schema="newick")
current_parent = filter(lambda x: x.taxon.label == "Taxon" + str(u), [y for y in tree.leaf_nodes()])
temp_tree_nodes = [x for x in temp_tree.nodes()]
current_parent[0].add_child(temp_tree_nodes[1])
current_parent[0].add_child(temp_tree_nodes[2])
current_parent[0].taxon.label = current_parent[0].oid
#print tree
out = tree.as_string('newick')
pdm = treecalc.PatristicDistanceMatrix(tree)
T = [t1 for i, t1 in enumerate(tree.taxon_set)]
T.sort(key=lambda x: x.label)
#t = Tree(out.replace('[&U]',''))
out = out.replace('[&U]','[50]') ## 50 unit long sequences
open(outfile,'w').write(out) # The first T produced by the history
print(tree.as_ascii_plot())
print "New tree data structure"
D_net_dic = {}
D_net_ret = {}
D_net = []
for u in G_ref: D_net_dic[u] = {}
for u in sorted(G_ref):
print "size"
key1 = "Taxon" + str(u)
tmp_row = []
for v in sorted(G_ref):
key2 = "Taxon" + str(v)
if u < v: continue
D_net_dic[u][v] = 1.0 / (pdm(T[int(u)-1],T[int(v)-1])+1)
tmp_row.append(D_net_dic[u][v])
print D_net_dic[u][v],
D_net.append(tmp_row)
print '\n'
names = []
for u in G_ref: names.append('Taxon'+str(u))
print names
print D_net
D_net_final = _DistanceMatrix(names,D_net)
return D_net_final
def MakePlot(x, org_names, ckm30, ckm50, outgroup, outfile, outfilexml, sum_x):
#Make sure names are unique
names = org_names
for name in names:
if names.count(name)>1:
temp_name = name
i=1
for dummy in range(0,names.count(name)-1): #Don't change the last one, just to make sure we don't conflict with the outgroup
names[names.index(temp_name)] = temp_name + "_" + str(i)
i = i +1
#Normalize the x vector
x = map(lambda y: y/sum(x),x)
ckm30_norm = np.multiply(ckm30,1/np.diag(ckm30))
ckm50_norm = np.multiply(ckm50,1/np.diag(ckm50))
num_rows = ckm30_norm.shape[0]
num_cols = ckm30_norm.shape[1]
matrix=list()
for i in range(num_rows):
matrix.append([.5*(1-.5*ckm30_norm[i,j]-.5*ckm30_norm[j,i])+.5*(1-.5*ckm50_norm[i,j]-.5*ckm50_norm[j,i]) for j in range(i+1)])
#Make the list of distances (ave of the two ckm matrices)
ckm_ave_train = .5*ckm30_norm+.5*ckm50_norm
ckm_ave_train_dist = dict()
for i in range(len(org_names)):
ckm_ave_train_dist[org_names[i]] = [.5*ckm_ave_train[i,j]+.5*ckm_ave_train[j,i] for j in range(len(org_names))]
#Construct the tree. Note I could use RapidNJ here, but a few tests have shown that the trees that RapidNJ creates are rubbish.
dm = _DistanceMatrix(names, matrix)
constructor = DistanceTreeConstructor()
tree = constructor.nj(dm)
t=Tree(tree.format('newick'),format=1)
#tree.format('newick')
#Phylo.draw_ascii(tree)
#Now I will put internal nodes in a certain phylogenetic distance between the root and a given node.
#Function to insert a node at a given distance
def insert_node(t, name_to_insert, insert_above, dist_along):
insert_at_node = t.search_nodes(name=insert_above)[0]
parent = (t&insert_above).up
orig_branch_length = t.get_distance(insert_at_node,parent)
if orig_branch_length < dist_along:
raise ValueError("error: dist_along larger than orig_branch_length in PlotPackage.py")
removed_node = insert_at_node.detach()
removed_node.dist = orig_branch_length - dist_along
added_node = parent.add_child(name=name_to_insert, dist=dist_along)
added_node.add_child(removed_node)
#Function to insert a node some % along a branch, taking into account the ckm distances and nodes already created in the NJ tree (and what distance their descendants are from everyone else)
def insert_hyp_node(t, leaf_name, percent, ckm_ave_train_dist, org_names):
dists = map(lambda y: abs(y-percent), ckm_ave_train_dist[leaf_name])
nearby_indicies = list()
#Add all the organisms that are within 0.05 of the given percent
# for i in range(len(dists)):
# if dists[i]<=.05:
# nearby_indicies.append(i)
nearby_names = list()
#If there are no nearby indicies, add the closest organism to the given percent
if nearby_indicies==[]:
nearby_names.append(org_names[dists.index(min(dists))])
else:
for i in range(len(nearby_indicies)):
nearby_names.append(org_names[i])
mean_dist = np.mean(map(lambda y: ckm_ave_train_dist[leaf_name][org_names.index(y)],nearby_names))
nearby_names.append(leaf_name)
LCA = t.get_common_ancestor(nearby_names)
LCA_to_leaf_dist = t.get_distance(LCA,leaf_name)
#divide the dist to the right/left of the LCA node by the number of percentage points in there
if LCA.name==t.name:
percent_dist = percent*LCA_to_leaf_dist
if mean_dist <= percent:
child_node = (t&leaf_name)
else:
child_node = (t&nearby_names[0])#This means "go up from root" in the direction of the nearest guy
ancestor_node = (t&child_node.name).up
elif mean_dist <= percent:
percent_dist = t.get_distance(LCA) + abs(percent-mean_dist)*(LCA_to_leaf_dist)/(1-mean_dist)
child_node = (t&leaf_name)
ancestor_node = (t&child_node.name).up
else:
percent_dist = t.get_distance(LCA) - abs(percent-mean_dist)*(t.get_distance(LCA))/(mean_dist)
child_node = (t&leaf_name)
ancestor_node = (t&child_node.name).up
while t.get_distance(t.name, ancestor_node) > percent_dist:
child_node = ancestor_node
ancestor_node = (t&child_node.name).up
insert_node(t, leaf_name+"_"+str(percent), child_node.name, percent_dist-t.get_distance(t.name, ancestor_node))
#Set outgroup
if outgroup in names:
t.set_outgroup(t&outgroup) #I will need to check that this outgroup is actually one of the names...
else:
print("WARNING: the chosen outgroup " + outgroup + " is not in the given taxonomy: ")
print(names)
print("Proceeding without setting an outgroup. This may cause results to be uninterpretable.")
#Insert hypothetical nodes
hyp_node_names = dict()
cutoffs = [.9,.8,.7,.6,.5,.4,.3,.2,.1]
cutoffs = [-.5141*(val**3)+1.0932*(val**2)+0.3824*val for val in cutoffs]
for i in range(len(org_names)):
xi = x[i:len(x):len(org_names)]
for j in range(1,len(cutoffs)+1):
if xi[j]>0:
insert_hyp_node(t, org_names[i], cutoffs[j-1],ckm_ave_train_dist, org_names)
hyp_node_names[org_names[i]+"_"+str(cutoffs[j-1])] = [org_names[i], cutoffs[j-1], j-1] #in case there are "_" in the file names
size_factor=250
font_size=55
#Now put the bubbles on the nodes
def layout(node):
node_style = NodeStyle()
node_style["hz_line_width"] = 10
node_style["vt_line_width"] = 10
node.set_style(node_style)
#print(node)
if node.is_leaf():
if node.name in org_names:
#make reconstructed bubble
size = x[org_names.index(node.name)]
F = CircleFace(radius=size_factor*math.sqrt(size), color="RoyalBlue", style="sphere")
F.border.width = None
F.opacity = 0.6
faces.add_face_to_node(F,node, 0, position="branch-right")
#Denote that this was a training organism
nameFace = AttrFace("name", fsize=font_size, fgcolor='black')
faces.add_face_to_node(nameFace, node, 0, position="branch-right")
elif node.name in hyp_node_names: #Otherwise it's a hypothetical node, just use recon x
node_base_name = hyp_node_names[node.name][0]
percent = hyp_node_names[node.name][1]
if node_base_name in org_names:
idx = hyp_node_names[node.name][2]
size = x[org_names.index(node_base_name)+(idx+1)*len(org_names)]
F = CircleFace(radius=size_factor*math.sqrt(size), color="RoyalBlue", style="sphere")
F.border.width = None
F.opacity = 0.6
faces.add_face_to_node(F,node, 0, position="branch-right")
#This is if I want the names of the hypothetical nodes to be printed as well
#nameFace = AttrFace("name", fsize=font_size, fgcolor='black')
#faces.add_face_to_node(nameFace, node, 0, position="branch-right")
else:
size=0
else:
size=0
ts = TreeStyle()
ts.layout_fn = layout
ts.mode = "r"
#ts.mode = "c"
ts.scale = 2*1000
ts.show_leaf_name = False
ts.min_leaf_separation = 50
F = CircleFace(radius=.87*size_factor, color="RoyalBlue", style="sphere")
F.border.width = None
F.opacity = 0.6
ts.legend.add_face(F,0)
ts.legend.add_face(TextFace(" Inferred relative abundance",fsize=1.5*font_size,fgcolor="Blue"),1)
ts.legend.add_face(TextFace(" Total absolute abundance depicted " + str(sum_x)[0:8], fsize=1.5*font_size,fgcolor="Black"),1)
ts.legend_position=4
#t.show(tree_style=ts)
t.render(outfile, w=550, units="mm", tree_style=ts)
#Redner the XML file
project = Phyloxml()
phylo = phyloxml.PhyloxmlTree(newick=t.write(format=0, features=[]))
project.add_phylogeny(phylo)
project.export(open(outfilexml,'w'))
# rosalind_ba7b
'''
Limb Length Problem
Find the limb length for a leaf in a tree.
Given: An integer n, followed by an integer j between 0 and n - 1,
followed by a space-separated additive distance matrix D (whose elements are integers).
Return: The limb length of the leaf in Tree(D) corresponding to row j of this
distance matrix (use 0-based indexing).
'''
import numpy as np
from Bio.Phylo.TreeConstruction import _DistanceMatrix
from Bio.Phylo.TreeConstruction import DistanceTreeConstructor
f = open('rosalind_ba7b.txt')
n = int(f.readline().rstrip())
j = int(f.readline().rstrip())
D = np.fromfile(f, sep=' ', dtype=int).reshape(n, n)
#For the Phylo.TreeConstruction to work, integers must be Python int and not numpy.int64
dm = [[int(D[i, j]) for j in range(i+1)] for i in range(n)]
names = [str(i) for i in range(n)]
constructor = DistanceTreeConstructor()
tree = constructor.nj(_DistanceMatrix(names, dm))
print(round(tree.find_any(str(j)).branch_length))
t_ = open('taxas.txt')
taxas_ = []
for line in t_:
taxas_.append((line.rsplit()[0]))
t_.close()
dist_ = np.genfromtxt('distance_.log')
dist1_ = np.tril(dist_)
# Make list of lists
dist2_ = []
for x in range(0, np.shape(dist1_)[0]):
dist2_.append(list(dist1_[x][0:x + 1]))
mm_ = _DistanceMatrix(taxas_, dist2_)
root_ = DistanceTreeConstructor()
tree = root_.nj(mm_)
path_ = os.path.dirname(os.path.realpath(__file__))
path_break = path_.split('/')
dir_ = path_break[len(path_break) - 1]
Phylo.write(tree, str(dir_) + '.nex', 'newick')
############################################################################################################################
g_ = open('final.nex.tree', 'a')
with open(dir_ + '.p1.nex', 'r') as f_:
for line in f_:
g_.write(line)
g_.write('\nBEGIN TREES;\nTREE tree1 =')
with open(dir_ + '.nex', 'r') as f_:
for line in f_:
def construct_distance_matrix(names, bit_vectors): return _DistanceMatrix(names, get_similarity_from_bit_vectors(bit_vectors))
def block_jsd(genome_ffp_vector, output_file):
self_txt_result = output_file
with open(genome_ffp_vector, "r") as self_genome_ffp_vector:
genomes = collections.defaultdict(list)
for lines in self_genome_ffp_vector:
line = None
line = None
line = lines.strip().split()
genome_block_name = line[0]
genome_name = genome_block_name.split(".")[1].split("-")[0]
#transfrom list of strings to floats
block_ffp_vector = [float(i) for i in line[1:]]
genomes[genome_name].append(block_ffp_vector)
#matrix for final jsd distance, it should have the row&col length of total number of genomes
final_jsd_matrix = np.zeros(shape=(len(genomes.keys()),
len(genomes.keys())))
#now give index to each genome position
index_position = dict()
for index, genome in enumerate(genomes.keys()):
index_position[genome] = index
#Start pairwise comparison by combination of 2 genomes
for genome_pairs in combinations(genomes.keys(), 2):
genome_pair1 = None
genome_pair2 = None
pairwise_block_comparison = None
pairwise_min_jsds = None
Genome_A = None
Genome_B = None
pairwise_block_comparison = collections.defaultdict(list)
pairwise_min_jsds = collections.defaultdict(list)
genome_pair1 = genome_pairs[0]
genome_pair2 = genome_pairs[1]
#Compare every block of genome_pair1 to every block of genome_pair2
block_A = 0
for genome_pair1_vector in genomes[genome_pair1]:
block_A += 1
for genome_pair2_vector in genomes[genome_pair2]:
pairwise_block_comparison[
"%s_%i-%s" %
(genome_pair1, block_A, genome_pair2)].append(
JSD(np.array(genome_pair1_vector),
np.array(genome_pair2_vector)))
#Compare every block of genome_pair2 to every block of genome_pair1
block_B = 0
for genome_pair2_vector in genomes[genome_pair2]:
block_B += 1
for genome_pair1_vector in genomes[genome_pair1]:
pairwise_block_comparison[
"%s_%i-%s" %
(genome_pair2, block_B, genome_pair1)].append(
JSD(np.array(genome_pair2_vector),
np.array(genome_pair1_vector)))
#Select and save minumum values from each block pairwise comparison
for pairwise_block in pairwise_block_comparison:
if genome_pair1 == pairwise_block.split("-")[0].split("_")[
0] and genome_pair2 == pairwise_block.split("-")[1]:
pairwise_min_jsds[
"%s_%s" % (genome_pair1, genome_pair2)].append(
min(pairwise_block_comparison[pairwise_block]))
if genome_pair2 == pairwise_block.split("-")[0].split("_")[
0] and genome_pair1 == pairwise_block.split("-")[1]:
pairwise_min_jsds[
"%s_%s" % (genome_pair2, genome_pair1)].append(
min(pairwise_block_comparison[pairwise_block]))
#Now at this point pairwise_min_jsds.keys() should be just 2
if len(pairwise_min_jsds.keys()) == 2:
Genome_A = pairwise_min_jsds["%s_%s" %
(genome_pair1, genome_pair2)]
Genome_B = pairwise_min_jsds["%s_%s" %
(genome_pair2, genome_pair1)]
final_jsd = ((sum(Genome_A) / len(Genome_A)) +
(sum(Genome_B) / len(Genome_B))) / 2
#insert this value in the final matrix
final_jsd_matrix[index_position[genome_pair1],
index_position[genome_pair2]] = final_jsd
final_jsd_matrix[index_position[genome_pair2],
index_position[genome_pair1]] = final_jsd
#Write final results
np.savetxt(self_txt_result,
final_jsd_matrix,
fmt="%.18e",
delimiter="\t",
newline="\n",
header="\t".join(genomes.keys()),
footer="",
comments="")
#convert np matrix to lower triangular matrix and then to list of lists
names = genomes.keys()
new_jsd_matrix = []
loop_count = 0
for i in np.tril(final_jsd_matrix):
loop_count += 1
new_jsd_matrix.append(i.tolist()[:loop_count])
jsd_distance_lowertriange = _DistanceMatrix(names, new_jsd_matrix)
#construct nj phylogenetic tree
constructor = DistanceTreeConstructor()
nj_tree = constructor.nj(jsd_distance_lowertriange)
Phylo.draw_ascii(nj_tree)
#and write tree in newick formart
Phylo.write(nj_tree, 'nj_ffp_jsd_tree.newick', "newick")
def main():
### Main Arg Parse ###
parser = argparse.ArgumentParser(
description="Automated Phylogeny Builder v1")
parser.add_argument(
'-d',
'--indir',
help="Input Directory: Directory of FASTA files to analyze")
parser.add_argument('-o', '--out', help="Output Directory", required=True)
parser.add_argument('-t',
'--threads',
help="Number of max threads to use (default=1)",
default="1")
parser.add_argument(
'-b',
'--mash_db',
help="Provide prebuilt mash DB, otherwise build from scratch")
parser.add_argument(
'-f',
'--fast',
help="Fast option for distance based neighbor joining tree",
action="store_true")
parser.add_argument(
'-m',
'--max_num',
help="Maximum number of isolates to include (default=50)",
default="50")
parser.add_argument(
'-g',
'--genomes',
help=
"Provide genome directory to build tree with instead of automatically picking, requires -r flag"
)
parser.add_argument(
'-r',
'--reference',
help=
"Required with -g flag; provide reference to use for phylogeny when providing genome directory"
)
parser.add_argument('-s',
'--snippy',
help="existing snippy dir, requires -g and -r")
parser.add_argument(
'-p',
'--proj_name',
help=
"project prefix - will be used to label all files associated with project",
required=True)
args = vars(parser.parse_args())
start_time = time.time()
### Print Args ###
print("Running with the following parameters:")
for arg in args:
print(arg, ":", args[arg])
### Set Output (Create if doesn't exist already) ###
set_output(args["out"])
### Initialize variables ###
automatic_selection = True
threads = args["threads"]
q_dict = {}
sketches_dict = {}
sketches = []
sketch_info = {}
results_dict = {}
thresholds = {}
error_dict = {}
temp_dir = tempfile.mkdtemp()
project_name = args["proj_name"]
dir_flag = False
mash_assembly_list = []
max_num = int(args["max_num"])
if args["fast"]:
need_ref = False
else:
need_ref = True
if args["mash_db"]:
mash_db = args["mash_db"]
if args["indir"]:
input_dir = args["indir"]
query_assemblies = []
if args["snippy"]:
if not args["genomes"]:
error_dict[
"snippy dir provided without genome dir, exiting"] = "Input error: "
error(error_dict)
if not args["reference"]:
error_dict[
"snippy dir provided without reference, exiting"] = "Input error: "
error(error_dict)
automatic_selection = False
if args["genomes"] and args["reference"]:
input_dir = args["genomes"]
reference = args["reference"]
dir_flag = True
automatic_selection = False
if args["genomes"] and not args["reference"]:
error_dict[
"Genome dir provided without reference, exiting"] = "Input error: "
error(error_dict)
if args["reference"] and not args["genomes"]:
error_dict[
"Reference provided without genome directory, exiting"] = "Input error: "
error(error_dict)
in_file_counter = 0
for in_file in os.listdir(input_dir):
in_file_path = os.path.join(input_dir, in_file)
query_assemblies.append(in_file_path)
in_file_counter += 1
max_num_per_query = (max_num - in_file_counter) / in_file_counter
query_sketch = mash_sketch_list(threads, query_assemblies, OUTPUT_DIR,
project_name, temp_dir)
if need_ref:
ref_path = pick_reference(query_sketch, threads)
if not args["mash_db"]:
bmgap_data = call_bmgap_api()
for record in bmgap_data:
mash_assembly_list.append(bmgap_data[record]["assembly_path"])
mash_db = mash_sketch_list(threads, mash_assembly_list, OUTPUT_DIR,
project_name, temp_dir)
if automatic_selection:
final_genomes = pick_genomes(query_sketch, mash_db, args["threads"],
int(max_num_per_query), force_max)
if need_ref:
final_genomes["ref"] = ref_path
print(ref_path)
else:
final_genomes = {
"all_genomes": [],
"details": {},
"ref": args["reference"]
}
for infile in os.listdir(args["genomes"]):
for ext in fasta_extensions:
if ext in infile:
infile_path = os.path.join(args["genomes"], infile)
if infile_path not in final_genomes["all_genomes"]:
final_genomes["all_genomes"].append(infile_path)
continue
#pp.pprint(final_genomes)
if not args["fast"]:
if not args["snippy"]:
snippy_dir = run_snippy(final_genomes, args["threads"],
query_assemblies, dir_flag)
else:
snippy_dir = args["snippy"]
redo_list = snippy_check(snippy_dir)
for obj in redo_list:
print(obj)
for genome in os.listdir(input_dir):
print(genome)
if obj in genome:
print("found")
redo_obj = os.path.join(genome_dir, genome)
call_snippy(reference, redo_obj)
call([
"snippy-core --prefix={}_core --aformat=fasta {}/*".format(
project_name, snippy_dir)
],
shell=True)
p2 = Popen(["mv {}_core* {}".format(project_name, snippy_dir)],
shell=True)
p2.wait()
p3 = Popen([
"python3 {} {}/{}_core.full.aln -o {}".format(
mask_map_script, snippy_dir, project_name, OUTPUT_DIR)
],
shell=True)
p3.wait()
masked_aln_file = "{}/{}_core.full_masked.aln".format(
OUTPUT_DIR, project_name)
partition_file = "{}/{}_core.full_partition.txt".format(
OUTPUT_DIR, project_name)
print("gubbins")
p4 = Popen([
"run_gubbins.py -c {} -i 10 -u -p {}/gubbins_masked -v -t raxml {}"
.format(args["threads"], OUTPUT_DIR, masked_aln_file)
],
shell=True)
p4.wait()
gubbins_phylip_file = "{}/gubbins_masked.filtered_polymorphic_sites.phylip".format(
OUTPUT_DIR)
p5 = Popen([
"python3 {} {} {}".format(adjust_size_script, gubbins_phylip_file,
partition_file)
],
shell=True)
p5.wait()
abs_output = os.path.abspath(OUTPUT_DIR)
print("raxml")
p6 = Popen([
"raxmlHPC-PTHREADS -s {} -w {} -n {}_out --asc-cor=stamatakis -q {} -m GTRGAMMAX -T {} -N autoMRE -p 6420662893125220392 -f a -x 7125452922221827660"
.format(gubbins_phylip_file, abs_output, project_name,
partition_file, args["threads"])
],
shell=True)
p6.wait()
else:
mash_matrix = make_mash_matrix(threads, final_genomes["all_genomes"],
OUTPUT_DIR, project_name, temp_dir)
# with open("test_out.txt","w") as f:
# f.write(mash_matrix)
i = 2
matrix = []
names = []
firstLine = True
mash_matrix_lines = mash_matrix.split("\n")
for line in mash_matrix_lines:
if line.strip() != "":
if firstLine:
print(line)
current_names = line.split("\t")
for obj in current_names:
if len(obj) > 0:
names.append(obj)
firstLine = False
else:
sub_matrix = []
values = line.split("\t")
for q in range(1, i):
val = float(values[q])
sub_matrix.append(val)
matrix.append(sub_matrix)
i += 1
#print(names)
#print(len(names),len(matrix))
print("building tree")
dm = _DistanceMatrix(names, matrix)
constructor = DistanceTreeConstructor(method="nj")
tree = constructor.nj(dm)
Phylo.write([tree], "my_tree.tree", "newick")
def main(argv):
input_file=''
title='Title'
label_internal_nodes = False
label_leaves = False
out_file=''
width=750
out_file_xml=''
plot_rectangular = False
common_kmer_data_path=''
taxonomic_names_on_leaves = False
try:
opts, args = getopt.getopt(argv,"h:i:lnrto:w:x:D:",["Help=","InputCommonKmerXFile=","LabelLeaves=", "LabelInternalNodes=","Rectangular=", "TaxonomicNamesOnLeaves=", "OutFile=","Width=","OutFileXML=","CommonKmerDataPath="])
except getopt.GetoptError:
print 'Unknown option, call using: ./PlotNJTree.py -i <InputCommonKmerXFile> -D <CommonKmerDataPath> -l <LabelLeavesFlag> -n <LabelInternalNodesFlag> -r <RectangularPlotFlag> -t <TaxonomicNamesOnLeavesFlag> -o <OutFile.png> -x <Outfile.xml> -w <Width>'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print './PlotNJTree.py -i <InputCommonKmerXFile> -D <CommonKmerDataPath> -l <LabelLeavesFlag> -n <LabelInternalNodesFlag> -r <RectangularPlotFlag> -t <TaxonomicNamesOnLeavesFlag> -o <OutFile.png> -x <Outfile.xml> -w <Width>'
sys.exit(2)
elif opt in ("-i", "--InputCommonKmerXFile"):
input_file = arg
elif opt in ("-l", "--LabelLeaves"):
label_leaves = True
elif opt in ("-n","--LabelInternalNodes"):
label_internal_nodes = True
elif opt in ("-o", "--OutFile"):
out_file = arg
elif opt in ("-w", "--Width"):
width = int(arg)
elif opt in ("-x", "--OutFileXML"):
out_file_xml = arg
elif opt in ("-D", "--CommonKmerDataPath"):
common_kmer_data_path = arg
elif opt in ("-r", "--Rectangular"):
plot_rectangular = True
elif opt in ("-t", "--TaxonomicNamesOnLeaves"):
taxonomic_names_on_leaves = True
#Read in the x vector
fid = open(input_file,'r')
x = map(lambda y: float(y),fid.readlines())
fid.close()
#Normalize the x vector
#x = map(lambda y: y/sum(x),x)
#Read in the taxonomy
taxonomy = list()
fid = open(os.path.join(common_kmer_data_path,"Taxonomy.txt"),'r')
for line in fid:
taxonomy.append('_'.join(line.split()[0].split("_")[1:])) #Just take the first line of the taxonomy (erasing the taxID)
fid.close()
#Read in the basis for the ckm matrices
x_file_names = list()
fid = open(os.path.join(common_kmer_data_path,"FileNames.txt"),'r')
for line in fid:
x_file_names.append(os.path.basename(line.strip()))
fid.close()
#Read in the common kmer matrix
f=h5py.File(os.path.join(common_kmer_data_path,'CommonKmerMatrix-30mers.h5'),'r')
ckm30=np.array(f['common_kmers'],dtype=np.float64)
f.close()
f=h5py.File(os.path.join(common_kmer_data_path,'CommonKmerMatrix-50mers.h5'),'r')
ckm50=np.array(f['common_kmers'],dtype=np.float64)
f.close()
ckm30_norm = np.multiply(ckm30,1/np.diag(ckm30))
ckm50_norm = np.multiply(ckm50,1/np.diag(ckm50))
num_rows = ckm30_norm.shape[0]
num_cols = ckm30_norm.shape[1]
names = x_file_names
matrix=list()
for i in range(num_rows):
matrix.append([.5*(1-.5*ckm30_norm[i,j]-.5*ckm30_norm[j,i])+.5*(1-.5*ckm50_norm[i,j]-.5*ckm50_norm[j,i]) for j in range(i+1)])
#Construct the tree. Note I could use RapidNJ here, but a few tests have shown that the trees that RapidNJ creates are rubbish.
dm = _DistanceMatrix(names, matrix)
constructor = DistanceTreeConstructor()
tree = constructor.nj(dm)
t=Tree(tree.format('newick'),format=1)
#tree.format('newick')
#Phylo.draw_ascii(tree)
#Now I will put internal nodes in a certain phylogenetic distance between the root and a given node.
#Function to insert a node at a given distance
def insert_node(t, name_to_insert, insert_above, dist_along):
insert_at_node = t.search_nodes(name=insert_above)[0]
parent = (t&insert_above).up
orig_branch_length = t.get_distance(insert_at_node,parent)
if orig_branch_length < dist_along:
raise ValueError("error: dist_along larger than orig_branch_length")
removed_node = insert_at_node.detach()
removed_node.dist = orig_branch_length - dist_along
added_node = parent.add_child(name=name_to_insert, dist=dist_along)
added_node.add_child(removed_node)
#Function to insert a node some % along a branch
def insert_hyp_node(t, leaf_name, percent):
total_dist = t.get_distance(t.name,leaf_name)
percent_dist = percent*total_dist
child_node = (t&leaf_name)
ancestor_node = (t&child_node.name).up
while t.get_distance(t.name, ancestor_node) > percent_dist:
child_node = ancestor_node
ancestor_node = (t&child_node.name).up
insert_node(t, leaf_name+"_"+str(percent), child_node.name, percent_dist-t.get_distance(t.name, ancestor_node))
#Insert hypothetical nodes
hyp_node_names = dict()
cutoffs = [.9,.8,.7,.6,.5,.4,.3,.2,.1]
cutoffs = map(lambda y: y**1.5,cutoffs)
for i in range(len(x_file_names)):
xi = x[i:len(x):len(x_file_names)]
for j in range(1,len(cutoffs)+1):
if xi[j]>0:
insert_hyp_node(t, x_file_names[i], cutoffs[j-1])
hyp_node_names[x_file_names[i]+"_"+str(cutoffs[j-1])] = [x_file_names[i], cutoffs[j-1], j-1] #in case there are "_" in the file names
#insert_hyp_node(t, x_file_names[i],.5/t.get_distance(t.name,t&x_file_names[i])*cutoffs[j])
#Now put the bubbles on the nodes
def layout(node):
#print(node)
if node.is_leaf():
if node.name in x_file_names:
#make reconstructed bubble
size = x[x_file_names.index(node.name)]
F = CircleFace(radius=500*math.sqrt(size), color="RoyalBlue", style="sphere")
F.border.width = None
F.opacity = 0.6
faces.add_face_to_node(F,node, 0, position="branch-right")
if taxonomic_names_on_leaves:
nameFace = AttrFace("name", fsize=25, fgcolor='black',text_suffix="_"+taxonomy[x_file_names.index(node.name)])
faces.add_face_to_node(nameFace, node, 0, position="branch-right")
else:
nameFace = AttrFace("name", fsize=25, fgcolor='black')
faces.add_face_to_node(nameFace, node, 0, position="branch-right")
elif node.name in hyp_node_names: #Otherwise it's a hypothetical node, just use recon x
node_base_name = hyp_node_names[node.name][0]
percent = hyp_node_names[node.name][1]
if node_base_name in x_file_names:
idx = hyp_node_names[node.name][2]
size = x[x_file_names.index(node_base_name)+(idx+1)*len(x_file_names)]
F = CircleFace(radius=500*math.sqrt(size), color="RoyalBlue", style="sphere")
F.border.width = None
F.opacity = 0.6
faces.add_face_to_node(F,node, 0, position="branch-right")
#print node
#print size
else:
size=0
else:
size=0
#print(size)
ts = TreeStyle()
ts.layout_fn = layout
if plot_rectangular:
ts.mode = "r"
else:
ts.mode = "c"
ts.show_leaf_name = False
ts.min_leaf_separation = 50
#Export the tree to a png image
t.render(out_file, w=width, units="mm", tree_style=ts)
#Export the xml file
project = Phyloxml()
phylo = phyloxml.PhyloxmlTree(newick=t.write(format=0, features=[]))
phylo.phyloxml_phylogeny.set_name(title)
project.add_phylogeny(phylo)
project.export(open(out_file_xml,'w'))